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    BAND-PASS FILTER
    2.
    发明申请
    BAND-PASS FILTER 有权
    带通滤镜

    公开(公告)号：US20090027139A1

    公开(公告)日：2009-01-29

    申请号：US12088311

    申请日：2006-09-26

    申请人： Roman Kravchenko ,  Denys Orlenko ,  Georgiy Sevskiy ,  Patric Heide

    发明人： Roman Kravchenko ,  Denys Orlenko ,  Georgiy Sevskiy ,  Patric Heide

    IPC分类号： H03H7/065

    CPC分类号： H03H7/0115 ,  H03H7/065 ,  H03H7/175 ,  H03H2001/0085

    摘要： A bandpass filter is described herein. The bandpass filter has two parallel signal branches, each connected, on an input side, to an input node and, on an output side, to an output node. The two signal branches form a ring resonator, having a wave mode with a complex amplitude of ŪCW=|Ū|exp{−jφCW} propagating in a clockwise direction and a wave mode with a complex amplitude of ŪCCW=|ŪCCW|exp{−jφCCW} propagating in a counterclockwise direction. The vector sum of a resulting wave Ūout at the output node of the bandpass filter at two or more stop frequencies is: Ūout=ŪCW+ŪCCW=0, and |ŪCW|=|UCCW| and |φCW−φCCW|=180°. The stop frequencies are arranged such that a passband is formed between two stop frequencies.

    摘要翻译： 本文描述了带通滤波器。 带通滤波器具有两个并行信号分支，每个信号分支在输入侧连接到输入节点，并且在输出侧连接到输出节点。 两个信号分支形成环形谐振器，其具有以顺时针方向传播的复振幅UCW = | U | exp {-jphiCW}的波模，并且具有复振幅UCCW = | UCCW | exp { - jphiCCW}在逆时针方向传播。 在两个或更多个停止频率的带通滤波器的输出节点处的所得到的波形Uout的矢量和为：U out = UCW + UCCW = 0，| UCW | = | UCCW | 和| phiCW-phiCCW | = 180°。 停止频率被布置成使得在两个停止频率之间形成通带。

    Current gain filter
    3.
    发明授权
    Current gain filter 失效
    电流增益滤波器

    公开(公告)号：US3818387A

    公开(公告)日：1974-06-18

    申请号：US27721472

    申请日：1972-08-02

    申请人： MURPHY J

    发明人： MURPHY J

    IPC分类号： H03H7/065 ,  H03H7/04

    CPC分类号： H03H7/065

    摘要： A current gain filter including an electrical circuit containing a number of passive elements which divide the current flow from a current generator into several current components whose vector sum is greater than the input current from the current generator. In one form of the invention, resistive and capacitive elements are utilized; in a second form, resistive and inductive elements are utilized; and in a third form, the circuit contains resistive, capacitive and inductive elements. For each form of the invention, a transfer function can be derived which contains several independent parameters by means of which the ratio of output current to input current and the phase angle therebetween can be calculated.

    摘要翻译： 一种电流增益滤波器，包括包含多个无源元件的电路，所述无源元件将来自电流发生器的电流分流成其矢量和大于来自电流发生器的输入电流的若干电流分量。 在本发明的一种形式中，利用电阻和电容元件; 在第二种形式中，利用电阻和电感元件; 并且在第三种形式中，电路包含电阻，电容和电感元件。 对于本发明的每种形式，可以导出传递函数，该传递函数包含几个独立参数，通过该参数可以计算输出电流与输入电流的比值以及它们之间的相位角。

    DISTORTION MEASUREMENT AND CORRECTION SYSTEM AND METHOD
    9.
    发明申请
    DISTORTION MEASUREMENT AND CORRECTION SYSTEM AND METHOD 有权
    失真测量和校正系统及方法

    公开(公告)号：US20150042402A1

    公开(公告)日：2015-02-12

    申请号：US14452949

    申请日：2014-08-06

    申请人： LTX-Credence Corporation

    发明人： RICHARD LIGGIERO

    IPC分类号： H03H11/04 ,  G06F17/50 ,  H03H11/06

    CPC分类号： G06F17/5009 ,  G01R23/20 ,  G01R27/28 ,  G06F17/5036 ,  H03H7/065 ,  H03H11/1295 ,  H03H11/32 ,  H03H2007/013 ,  H03H2011/0488 ,  H03M1/00

    摘要： A method, computer program product, and computer system for determining a magnitude and phase of a spurious-free dynamic range component. A first signal and a second signal may be received from a first source operatively connected to a differential component. A first output associated with the first signal and a second output associated with the second signal may be nulled. The first signal and the second signal may be shorted. A second source operatively connected to the differential component may be disconnected. The first signal of the first source may be applied at a same phase as the second source with an additional phase delta, +Yo. A first differential residual signal may be measured using the first signal at the same phase as the second source with the additional phase delta, +Yo. The second signal of the first source may be applied at the same phase as the second source with an additional phase delta, −Yo. A second differential residual signal may be measured using the second signal at the same phase as the second source with the additional phase delta, −Yo. The magnitude and phase of the distortion component of the first source may be determined based upon, at least in part, the first and second differential residual signal.

    摘要翻译： 一种用于确定无杂散动态范围分量的幅度和相位的方法，计算机程序产品和计算机系统。 可以从可操作地连接到差分部件的第一源接收第一信号和第二信号。 与第一信号相关联的第一输出和与第二信号相关联的第二输出可以被置零。 第一信号和第二信号可能短路。 可操作地连接到差分部件的第二源可以被断开。 第一源的第一信号可以以与第二源相同的相位施加附加的相位增量+ Yo。 可以使用与第二源相同相位的第一信号与附加相位Δ+ Yo来测量第一差分残差信号。 第一源的第二信号可以以与第二源相同的相位施加附加的相位Δ，-Y。 第二差分残差信号可以使用与第二源相同相位的第二信号与附加相位Δ-Y测量。 可以至少部分地基于第一和第二差分残差信号来确定第一源的失真分量的大小和相位。

    Variable response notch filter for machine resonance elimination in a servo control system
    10.
    发明授权
    Variable response notch filter for machine resonance elimination in a servo control system 失效
    伺服控制系统中机器共振消除的可变响应陷波滤波器

    公开(公告)号：US4195265A

    公开(公告)日：1980-03-25

    申请号：US913526

    申请日：1978-06-08

    申请人： Enn Vali

    发明人： Enn Vali

    IPC分类号： G05B5/01 ,  G05D3/14 ,  H03H7/065 ,  H03H11/12 ,  H03B1/04

    CPC分类号： H03H7/0153 ,  G05B5/01 ,  G05D3/1445 ,  H03H7/065

    摘要： This invention relates to a flexible notch filter for use in a servo system to eliminate natural mechanical resonance. The filter is an improved "twin-T" type where the "in-phase" output of the filter is fed back into the filter. Varying the feedback varies the bandwidth of the filter. The improved filter further provides for attenuation control in addition to control of the center frequency of the filter. The advantage of this filter over prior art designs is that one filter may be manufactured and adapted to be used in many servo systems since the filter can be easily adjusted to effectively eliminate the natural resonating frequency of the machine in addition to reducing phase lag at frequencies below the center frequency of the notch filter.

    摘要翻译： 本发明涉及一种用于伺服系统中的消除自然机械共振的柔性陷波滤波器。 滤波器是改进的“双T”型，其中滤波器的“同相”输出反馈到滤波器中。 反馈的变化会改变滤波器的带宽。 改进的滤波器除了控制滤波器的中心频率之外还进一步提供衰减控制。 该滤波器相对于现有技术设计的优点在于，可以制造一个滤波器并适用于许多伺服系统，因为除了减少频率的相位滞后之外，滤波器可以容易地调整以有效地消除机器的自然谐振频率 低于陷波滤波器的中心频率。